Home / 145,236.17-200,421.89-80,703.74

Finding the Fourth Proportional to 145,236.17, 200,421.89 and 80,703.74

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Solution

The fourth proportional to 145,236.17, 200,421.89 and 80,703.74 is: 111,368.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,236.17 : 200,421.89 = 80,703.74 : x
  2. Step 2: Convert to fraction form
    145,236.17/200,421.89 = 80,703.74/x
  3. Step 3: Cross multiply
    145,236.17x = 200,421.89 × 80,703.74
  4. Step 4: Simplify right side
    145,236.17x = 16,174,796,501.04
  5. Step 5: Solve for x
    x = 16,174,796,501.04/145,236.17
  6. Step 6: Final answer
    x = 111,368.93

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.